Wind turbines today use heavy generators packed with expensive rare earth magnets — imagine replacing a car engine with something half the weight that runs just as well without the pricey parts. EcoSwing built a superconducting generator that uses special wires cooled to extreme temperatures instead of rare earth magnets, making it 40% lighter and potentially 40% cheaper. They didn't just design it on paper — they actually installed and tested it on a real 3.6 MW wind turbine in Denmark. It's like proving an electric car works not in a lab, but by driving it across the country.
Wind turbines today rely on permanent magnet generators that are heavy, expensive, and dependent on rare earth metals with volatile supply chains dominated by a few countries. The weight of current generators drives up installation costs — especially offshore — requiring massive cranes and reinforced foundations. Turbine manufacturers need a lighter, cheaper alternative that doesn't depend on geopolitically risky materials.
The project built and turbine-tested a full-scale superconducting (HTS) drive train system — a demonstrator installed on a real 3.6 MW wind turbine in Thyborøn, Denmark. This included the superconducting generator, cryogenic cooling systems, and power conversion equipment, all validated under actual wind turbine operating conditions.
If you are a wind turbine manufacturer struggling with rising rare earth material costs and heavy nacelle designs — this project demonstrated a superconducting generator with 40% weight reduction and 25% nacelle weight reduction on a real 3.6 MW turbine. The design applies to turbines from 2 MW to 10 MW and beyond, meaning lighter installation logistics and lower material costs at scale.
If you are an offshore wind developer facing massive crane and installation costs driven by nacelle weight — this project proved a generator technology that cuts nacelle weight by 25%. For offshore installations where every ton lifted costs thousands, this could significantly reduce your capital expenditure on next-generation turbines rated 2 MW to 10 MW and beyond.
If you are an energy company worried about rare earth supply chain risks from geopolitical tensions — this project reduced rare earth metal dependence by at least two orders of magnitude. The superconducting generator was turbine-tested on a 3.6 MW wind turbine in Denmark, proving the technology works in real operating conditions.
The project states that assuming series production, cost reduction for the generator can be 40% compared to commercial permanent magnet direct-drive generators (PMDD). This was demonstrated on a 3.6 MW class turbine, with the design applicable from 2 MW to 10 MW and beyond.
This went well beyond the lab. EcoSwing installed and operated a full-scale demonstrator on an existing 3.6 MW wind turbine in Thyborøn, Denmark. The project advanced the technology readiness level from TRL 4-5 to TRL 6-7, meaning it was demonstrated in a relevant operational environment.
The project was coordinated by Envision Energy (Denmark) with a consortium of 9 partners across 5 countries. Based on available project data, specific IP and licensing terms are not publicly disclosed. Interested companies should contact the consortium partners to discuss licensing or collaboration arrangements.
The generator weight is reduced by 40% compared to PMDD, translating to a 25% nacelle weight reduction. For installation teams, this means smaller cranes, simpler transport logistics, and potentially lower foundation requirements — all significant cost drivers especially for offshore wind.
The EcoSwing design principles are applicable to turbines with a wide range of ratings from 2 MW to 10 MW and beyond. The demonstration was carried out on a 3.6 MW turbine, proving viability at a commercially relevant scale already in today's large-scale wind power market.
The superconducting generator reduces reliance on rare earth metals by at least two orders of magnitude compared to permanent magnet direct-drive generators. This is achieved by replacing rare earth permanent magnets with high-temperature superconducting (HTS) coils, fundamentally changing the supply chain risk profile.
The EcoSwing consortium is strongly industry-driven with 7 out of 9 partners from industry (78% industry ratio), spanning 5 countries (DE, DK, FR, NL, UK). This is not a university research exercise — it's a full value chain from superconducting materials and cryogenic components through to turbine manufacturing, led by Envision Energy, one of the world's largest wind turbine manufacturers. With only 1 university and 1 research organization, the consortium was clearly built for engineering delivery and commercial demonstration, not academic publication. The 2 SMEs in the mix suggest specialized component suppliers are already positioned for this technology.
Envision Energy (Denmark) APS — a major global wind turbine manufacturer headquartered in Denmark
Want an introduction to the EcoSwing team to explore licensing or supply partnerships? SciTransfer can connect you with the right technical contact.
